Table S5 Kappa values for the GCS components and the sum score

Study / Patients (N) / Setting / Eye / Motor / Verbal / Score
Good methodological quality
Gill et al. 2004 [31] / 116 / ED / 0.72 / 0.63 / 0.48 / 0.40
Holdgate et al. 2006 [61] / 108 / ED / 0.64 / 0.75 / 0.79 / 0.76
Wolf et al. 2007 [64] / 80 / ICU / 0.85 / 0.74 / 0.89 / 0.83
Stead et al. 2009 [69] / 69 / ED / 0.87 / 0.81 / 0.87 / 0.86
Fischer et al. 2010 [70] / 267 / ICU / 0.72 / 0.74 / 0.78 / 0.61
Idrovo et al. 2010 [71] / 60 / Stroke unit / 0.90 / 0.96 / 0.86 / 0.96
Takahashi et al. 2011 [79] / 495 / ED / - / - / - / 0.78
Fair methodological quality
Tesseris et al. 1991 [53] / 74 / ICU / - / - / - / 0.35
Ely et al. 2003 [59] / 38 / ICU / - / - / - / 0.64
Hollander et al. 2003 [25] / 3951 / ED / 0.68 / 0.77 / 0.76 / -
Heard & Bebarta. 2004 [40] / 39 / ED / 0.78 / 0.63 / 0.71 / 0.85
Wijdicks et al. 2005 [60] / 120 / ICU / 0.77 / 0.77 / 0.88 / 0.82
Gill et al. 2007 [36] a / 120 / ED / 0.57 / 0.54 / 0.44 / 0.32
Akavipat et al. 2009 [66] / 100 / Ward / -0.07 / 1.0 / 0.98 / -
Iyer et al. 2009 [67] / 100 / ICU / 0.96 / 0.97 / 0.98 / 0.98
Wenner et al. 2009 [27] / 95 / ICU / - / - / - / 0.36 c
Necioglu et al. 2010 [72] / 124 / NICU / - / - / - / 0.69
Bruno et al. 2011 [74] / 176 / ICU / 0.68 / 0.69 / 0.56 / 0.68
Kevric et al. 2011 [76] a / 203 / ED / 0.73 / 0.84 / 0.68 / 0.59
Marcati et al. 2012 [81] / 87 / ICU/ward / 0.95 / 0.92 / 0.96 / 0.94
Benítez-Rosario et al. 2013 [83] / 156 / Palliative care / - / - / - / 0.91
Gujjar et al. 2013 [85] / 100 / Ward / 0.84 / 0.85 / 0.77 / 0.71
Poor methodological quality
Braakman et al. 1977 [47] / 10 / Ward / - / 0.66 b / - / -
Lindsay et al. 1983 [49] / 126 / - / - / - / - / 0.69
Starmark&Heath 1988 [51] a / 26 / ICU / 0.63 / 0.71 / 0.74 / 0.47
Juarez & Lyons. 1995 [33] a / 7 / ICU / 0.59 / 0.44 / 0.79 / 0.39
Oshiro et al. 1997 [55] / 291 / ICU / - / - / - / 0.46
Chen et al. 1999 [28] / 342 / ICU / - / - / - / 0.32 c
Heron et al. 2001 [22] / 6 / ICU / 0.80 / 0.65 / 0.90 / 0.57
Kerby et al. 2007 [63] / 3052 / ED / 0.48 / 0.48 / 0.52 / -

a Unweighted kappa statistics

b Mean of multiple kappa score for both left and right arm

c GCS point in APACHE score